If multiple nodes in a high-availability cluster try to access a cluster file system at the same time, file system corruption can occur. As file system corruption may lead to data loss, it is something to be prevented at all costs. Therefore, before creating any services as resources in the high-availability (HA) cluster, an administrator should ensure cluster integrity using STONITH. This tip outlines the different options that an administrator should explore to ensure Linux HA server integrity.
The value of using STONITH
STONITH stands for “shoot the other node in the head.” It’s an extreme tactic that basically powers down the selected server remotely, removing it from the cluster and allowing other nodes in the cluster to take over. You would employ STONITH if one of the nodes in the cluster cannot be reached anymore by the other node(s) in the cluster.
The value of using STONITH
STONITH stands for “shoot the other node in the head.” It’s an extreme tactic that basically powers down the selected server remotely, removing it from the cluster and allowing other nodes in the cluster to take over. You would employ STONITH if one of the nodes in the cluster cannot be reached anymore by the other node(s) in the cluster.
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